add early returns to renderPollStats()

bigbluebutton-html5/imports/ui/components/poll/live-result/component.jsx

@@ -98,30 +98,30 @@ class LiveResult extends Component {
 
     const pollStats = [];
 
-    if (currentPoll) {
+    if (!currentPoll) return;
-      const {
-        answers,
-        numRespondents,
-      } = currentPoll;
 
-      if (answers) {
+    const {
-        answers.map((obj) => {
+      answers,
-          const pct = Math.round(obj.numVotes / numRespondents * 100);
+      numRespondents,
+    } = currentPoll;
 
-          return pollStats.push(<div className={styles.main} key={_.uniqueId('stats-')}>
+    if (!answers) return;
-            <div className={styles.left}>
+
-              {obj.key}
+    answers.map((obj) => {
-            </div>
+      const pct = Math.round(obj.numVotes / numRespondents * 100);
-            <div className={styles.center}>
+
-              {obj.numVotes}
+      return pollStats.push(<div className={styles.main} key={_.uniqueId('stats-')}>
-            </div>
+        <div className={styles.left}>
-            <div className={styles.right}>
+          {obj.key}
-              {`${isNaN(pct) ? 0 : pct}%`}
+        </div>
-            </div>
+        <div className={styles.center}>
-          </div>);
+          {obj.numVotes}
-        });
+        </div>
-      }
+        <div className={styles.right}>
-    }
+          {`${isNaN(pct) ? 0 : pct}%`}
+        </div>
+      </div>);
+    });
 
     return pollStats;
   }